Disguise The worlds leading costume design and manufacturing company brings you this Official Lego Ninjago Sword of Power kids costume accessory. Lego Ninjago – Sword of Power Wield the most powerful weapon in the Ninjago universe this Halloween as you head out trick or treating.  The perfect finishing touch to the Disguise Lego Ninjago costume range. The Size For You This kids Lego Ninjago Sword of Power costume accessory is available in one size that fits most children.